I wonder how fast these babies will be on single-core performance, compared to the i7's. Because 6 cores are nice and all, but still many things are single-threaded. I currently have a Q6600 and I hardly ever have all cores at 100%. I'm now looking into upgrading to an i7 though, to see the performance per core go up as well.

Aren't the Thuban processors supposed to disable cores to make more room to clock up the cores being used? A la turboboost? Should improve single-threaded performance, but we'll wait for a review before knowing too much.